serat berindeks berlandai bahasa Inggris

• graded index fiber

• serat:    fibre; fiber; fibers; fibre, fiber; grain;
• serat:    fibre; fiber; fibers; fibre, fiber; grain; string; serrated; staple; notched; raw material; toothed; serrate; saw-toothed; vulcanized fiber
• keluarga berindeks (matematika):    indexed family